From fc80fd1f6e67ceb0117ac4d69470ce7a52c163bf Mon Sep 17 00:00:00 2001
From: ilor <kailoran@gmail.com>
Date: Wed, 20 Oct 2010 13:14:18 +0200
Subject: [PATCH] fix Tagset::get_pos_mask with an invalid idx
---
libcorpus2/tagset.cpp | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/libcorpus2/tagset.cpp b/libcorpus2/tagset.cpp
index 82dfd31..51bce4a 100644
--- a/libcorpus2/tagset.cpp
+++ b/libcorpus2/tagset.cpp
@@ -354,7 +354,11 @@ mask_t Tagset::get_pos_mask(const string_range& pos) const
mask_t Tagset::get_pos_mask(idx_t pos) const
{
- return 1 << pos;
+ if (pos >= 0) {
+ return 1 << pos;
+ } else {
+ return 0;
+ }
}
idx_t Tagset::get_attribute_index(const string_range& a) const
--
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